CN104402384B - The large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good - Google Patents
The large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good Download PDFInfo
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- CN104402384B CN104402384B CN201410577814.1A CN201410577814A CN104402384B CN 104402384 B CN104402384 B CN 104402384B CN 201410577814 A CN201410577814 A CN 201410577814A CN 104402384 B CN104402384 B CN 104402384B
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Abstract
The invention discloses the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, include 70 120 parts of cordierite powder, Ludox 15 45 parts, 28 parts of glass fibre, methylcellulose 0.5 2 parts, Ludox reinforcing agent 5 20 parts and crust mud waterproofing agent 15 30 parts according to the raw material of weight portion.After the present invention is by adding Ludox reinforcing agent and crust mud waterproofing agent in filling a prescription at traditional unburned crust mud, on the one hand the water-resistance of crust mud is enhanced, on the other hand also prevent large, honeycomb ceramic monolith product when coating catalyst, other inorganic material in catalyst solution is adsorbed onto in crust mud, changes the material composition of crust mud.Within the most soaked 48 hours, not peeling off cracking by the crust mud after introducing both the above additive, also do not have cracking phenomena after coating catalyst roasting, crust thermal shock resistance reaches more than 700 DEG C.
Description
Technical field
The present invention relates to large, honeycomb ceramic monolith crust mud formulation art, the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good.
Background technology
Large, honeycomb ceramic monolith is that Diesel engine realizes state four and the critical component of above discharge standard, and large, honeycomb ceramic monolith in the market the most all exists some technical problems, the coming off of the crust that particularly product reproduces, problem of Cracking is the main problem that current large, honeycomb ceramic monolith is faced.
Due to the product diameter of large, honeycomb ceramic monolith the biggest (diameter is the most all at more than 150mm), the biggest diameter wants to ensure that the diameter tolerance of product, in the range of 2mm, is impossible by the way of a plasticity extrusion molding of legacy cellular ceramic monolith.Therefore the semi-finished product that large, honeycomb ceramic monolith is accomplished by after being fired into porcelain carry out cylindrical lapping according to dimensional requirement, give the goods outer wall coating last layer crust after grinding the most again, in addition micromicro to provide the mechanical strength needed for using to product, waste gas side leakage can be prevented simultaneously, and the aesthetic property of product can be increased.
The crust mud of the large, honeycomb ceramic monolith used in the market is divided into be fired and unburned two types.Firing crust mud is after semi-finished product grind, and coats last layer mud in side, treats that mud is dried, carries out roasting again so that crust possesses permanent intensity at a temperature of 800-1000 DEG C.Product crust prepared by this mode is not owing to being once-firing with body, its material property cannot keep consistent with body, cause product in use as easy as rolling off a log destroyed after heat-shock, and this after baking makes product cost be greatly promoted, the producer using this route the most in the market is little.Another kind is baking-free type crust mud, it is to coat, in ground semi-finished product side, the mud that last layer is basically identical with bulk material, mud is dried at low temperature (less than 100 degree), and the curing agent in mud will make crust possess certain hardness, thus meets the use requirement of product.This mode is currently mode commonly used on market.
In above-mentioned unburned crust mud formula, generally using Ludox to be used as curing agent, Ludox is after dry dehydration, and the nano level silica in the inside can form certain network structure by silicon oxygen bond, thus gives the offer of dried crust mud certain hardness.But owing to the silicon oxygen bond of Ludox is hardly formed longer network structure, and the coefficient of expansion of the introduced silica of Ludox can be much larger than bulk material cordierite, thus govern Ludox addition in crust mud, generally there are the soaked peeling of crust, 500 degree of roasting problems of crack of crust in the large, honeycomb ceramic monolith product of this type the most in the market.
Summary of the invention
It is an object of the invention to provide the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, efficiently solve unburned crust mud water stripping and the problem of roasting cracking.
For achieving the above object, the present invention provides following technical scheme:
The large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, includes cordierite powder 70-120 part, Ludox 15-45 part, glass fibre 2-8 part, methylcellulose 0.5-2 part, Ludox reinforcing agent 5-20 part and crust mud waterproofing agent 15-30 part according to the raw material of weight portion.
As the further scheme of the present invention: described Ludox reinforcing agent is a kind of Ludox coupling agent, and the mass percent that described Ludox reinforcing agent is occupied in whole formula is 0.1-20%.
As the further scheme of the present invention: described crust mud waterproofing agent is the waterproofing agent of a kind of silicone type, the mass percent that described crust mud waterproofing agent is occupied in whole formula is 0.1-10%.
Compared with prior art, the invention has the beneficial effects as follows:
After the present invention is by adding Ludox reinforcing agent and crust mud waterproofing agent in filling a prescription at traditional unburned crust mud, the dried intensity of crust mud becomes permanent, more than 48 hours are soaked all without occurring weakening in water, simultaneously because introduce crust mud waterproofing agent, on the one hand the water-resistance of crust mud is enhanced, on the other hand also prevent large, honeycomb ceramic monolith product when coating catalyst, other inorganic material in catalyst solution is adsorbed onto in crust mud, changes the material composition of crust mud.Within the most soaked 48 hours, not peeling off cracking by the crust mud after introducing both the above additive, also do not have cracking phenomena after coating catalyst roasting, crust thermal shock resistance reaches more than 700 DEG C.
Ludox reinforcing agent in the present invention is a kind of Ludox coupling agent, the chain structure of the silicon oxygen bond in Ludox can greatly be extended by this coupling agent, also improve the adhesion of silicon oxygen bond simultaneously, the coupling agent that the present invention relates to is the coupling agent of a kind of silanes, this coupling agent one end firmly can be combined with Ludox silicon oxygen bond, and the other end can form the strongest associative key with cordierite powder and bulk material.
Crust mud waterproofing agent in the present invention is the waterproofing agent of a kind of silicone type, dried at crust mud, this waterproofing agent forms the organic film of one layer of hydrophobic on the powder granule surface of crust mud, it is silicone type due to introduce, on the one hand crust mud can be made to play good waterproof effect after drying, avoiding crust mud when coating catalyst, the inorganic particle in catalyst solution invades crust mud, and the interpolation of self simultaneously also will not change the constituent of crust mud.
Detailed description of the invention
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, includes 98 parts of cordierite powder, Ludox 30 parts, 5 parts of glass fibre, methylcellulose 1 part, Ludox reinforcing agent 5 parts and crust mud waterproofing agent 15 parts according to the raw material of weight portion.
Embodiment 2
In the embodiment of the present invention, the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, includes 98 parts of cordierite powder, Ludox 30 parts, 5 parts of glass fibre, methylcellulose 1 part, Ludox reinforcing agent 10 parts and crust mud waterproofing agent 15 parts according to the raw material of weight portion.
Embodiment 3
In the embodiment of the present invention, the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, includes 98 parts of cordierite powder, Ludox 30 parts, 5 parts of glass fibre, methylcellulose 1 part, Ludox reinforcing agent 20 parts and crust mud waterproofing agent 15 parts according to the raw material of weight portion.
Embodiment 4
In the embodiment of the present invention, the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, includes 98 parts of cordierite powder, Ludox 30 parts, 5 parts of glass fibre, methylcellulose 1 part, Ludox reinforcing agent 30 parts and crust mud waterproofing agent 15 parts according to the raw material of weight portion.
Embodiment 5
In the embodiment of the present invention, the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, includes 98 parts of cordierite powder, Ludox 30 parts, 5 parts of glass fibre, methylcellulose 1 part, Ludox reinforcing agent 20 parts and crust mud waterproofing agent 10 parts according to the raw material of weight portion.
Embodiment 6
In the embodiment of the present invention, the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, includes 98 parts of cordierite powder, Ludox 30 parts, 5 parts of glass fibre, methylcellulose 1 part, Ludox reinforcing agent 20 parts and crust mud waterproofing agent 20 parts according to the raw material of weight portion.
Embodiment 7
In the embodiment of the present invention, the large, honeycomb ceramic monolith crust mud formula that a kind of unburned high rigidity water-resistance is good, includes 98 parts of cordierite powder, Ludox 30 parts, 5 parts of glass fibre, methylcellulose 1 part, Ludox reinforcing agent 20 parts and crust mud waterproofing agent 30 parts according to the raw material of weight portion.
The dried crust mud of embodiment 1-7 being carried out water resistant and washes test, the large, honeycomb ceramic monolith product after embodiment 1-7 coating catalyst carries out the test of thermal shock resistance, test result is as shown in table 1.As shown in Table 1, comparative example 1-4, in the case of the consumption of crust mud waterproofing agent is equal, increase along with the consumption of Ludox reinforcing agent, the thermal-shock resistance of large, honeycomb ceramic monolith product first strengthens and weakens afterwards, occur that when the consumption of Ludox reinforcing agent is 10 parts the large, honeycomb ceramic monolith product of best thermal shock resistance, i.e. embodiment 2 does not ftractures for three times at a temperature of 700 DEG C, and the dried crust mud of 4 embodiments is the most moistening in the case of water drenches.Comparative example 3, embodiment 5-7, in the case of Ludox reinforcing agent consumption is equal, dried crust mud nonwetting time in the case of water drenches increases along with the increase of the consumption of crust mud waterproofing agent, and the large, honeycomb ceramic monolith product of 4 embodiments does not all ftracture for three times at a temperature of 650 DEG C.Hence, it can be determined that the consumption of Ludox reinforcing agent is not The more the better, the consumption of Ludox reinforcing agent must could improve the thermal shock resistance of large, honeycomb ceramic monolith product within the specific limits.
The present invention is by adding the Ludox reinforcing agent of less than 20% and the crust mud waterproofing agent of less than 10% at traditional unburned crust mud in filling a prescription after, the dried intensity of crust mud becomes permanent, more than 48 hours are soaked all without occurring weakening in water, simultaneously because introduce crust mud waterproofing agent, on the one hand the water-resistance of crust mud is enhanced, on the other hand also prevent large, honeycomb ceramic monolith product when coating catalyst, other inorganic material in catalyst solution is adsorbed onto in crust mud, changes the material composition of crust mud.Within the most soaked 48 hours, not peeling off cracking by the crust mud after introducing both the above additive, also do not have cracking phenomena after coating catalyst roasting, crust thermal shock resistance reaches more than 700 DEG C.
The crust mud formula of table 1 embodiment 1-7 and water resistant is washed, thermal shock resistance
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is limited by claims rather than described above, it is intended that all changes fallen in the implication of equivalency and scope of claim included in the present invention.
In addition, it is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises an independent technical scheme, this narrating mode of specification is only for clarity sake, specification should can also be formed, through appropriately combined, other embodiments that it will be appreciated by those skilled in the art that as an entirety, the technical scheme in each embodiment by those skilled in the art.
Claims (1)
1. the large, honeycomb ceramic monolith crust mud that a unburned high rigidity water-resistance is good, it is characterised in that according to weight portion
Raw material include cordierite powder 70-120 part, Ludox 15-45 part, glass fibre 2-8 part, methylcellulose 0.5-2 part,
Ludox reinforcing agent 5-20 part and crust mud waterproofing agent 15-30 part；Described Ludox reinforcing agent is a kind of Ludox coupling agent,
The mass percent that described Ludox reinforcing agent is occupied in whole formula is 0.1-20%；Described crust mud waterproofing agent is one
Planting the waterproofing agent of silicone type, the mass percent that described crust mud waterproofing agent is occupied in whole formula is 0.1-10%.
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| CN105130490A (en) * | 2015-08-25 | 2015-12-09 | 福建紫荆环境工程技术有限公司 | Formula and technology of unfired honeycomb ceramic regenerator |
| CN105906367A (en) * | 2016-04-27 | 2016-08-31 | 云南菲尔特环保科技股份有限公司 | Non-fired high-hardness cordierite honeycomb ceramic skin and production method thereof |
| CN106045451A (en) * | 2016-06-03 | 2016-10-26 | 昆明理工大学 | Sintered-free cordierite honeycomb-ceramic hole plugging material |
| CN115536375A (en) * | 2022-10-14 | 2022-12-30 | 云南菲尔特环保科技股份有限公司 | Low-thermal-expansion and high-thermal-shock-resistance pansy honeycomb ceramic skin and preparation method thereof |
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| CN1735575A (en) * | 2003-01-09 | 2006-02-15 | 日本碍子株式会社 | Coating material, ceramic honeycomb structure and method for production thereof |
| CN102775164A (en) * | 2012-07-30 | 2012-11-14 | 北京法耳迈特科技有限责任公司 | Energy-saving modified coating and preparation method for boiler water cooled wall |
| CN103396103A (en) * | 2013-07-17 | 2013-11-20 | 李少荣 | Skin making mud based on large honeycomb ceramic carrier for skin making |
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| JPH0648860A (en) * | 1992-07-24 | 1994-02-22 | Matsushita Electric Ind Co Ltd | Production of porous heat resistant material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1735575A (en) * | 2003-01-09 | 2006-02-15 | 日本碍子株式会社 | Coating material, ceramic honeycomb structure and method for production thereof |
| CN102775164A (en) * | 2012-07-30 | 2012-11-14 | 北京法耳迈特科技有限责任公司 | Energy-saving modified coating and preparation method for boiler water cooled wall |
| CN103396103A (en) * | 2013-07-17 | 2013-11-20 | 李少荣 | Skin making mud based on large honeycomb ceramic carrier for skin making |
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Effective date of registration: 20170724 Address after: 343000 Ji'an City, Jiangxi Province Industrial Park of Jizhou District of Ji'an Jitai energy-saving environmental protection material Co. Ltd. Patentee after: JI'AN JITAI ENERGY-SAVING ENVIRONMENTAL PROTECTION MATERIAL Co.,Ltd. Address before: Pingjiang District of Suzhou City, Jiangsu province 215000 Han Ya Zhuang No. 1 Room 203 door Patentee before: Peng Hong |
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Effective date of registration: 20230718 Address after: No.3-520, Junyuehui Service Apartment, Jizhou District, Ji'an City, Jiangxi Province, 343100 Patentee after: Ji'an Jirui Technology Co.,Ltd. Address before: 343000 Ji'an Jizhou Industrial Park Ji'an Jitai Environmental Protection and Energy Saving Materials Co.,Ltd. Patentee before: JI'AN JITAI ENERGY-SAVING ENVIRONMENTAL PROTECTION MATERIAL Co.,Ltd. |